Bug 12909 - item withdrawn is missing in inventory results

Bug 12909 - item withdrawn is missing in inventory results

In inventory results, CSV or screen, the item withdrawn information is missing.
This information can be usefull to understand why an item was not scanned.

Test plan :
- Check you have in default framework an item subfield mapped with items.withdrawn
- Create a biblio with default framework
- Create an item with barcode='000AAA1', callnumber='ZZZAAA1' and withdrawn=0
- Create an item with barcode='000AAA2', callnumber='ZZZAAA2' and withdrawn=1
- Go to inventory tool : /cgi-bin/koha/tools/inventory.pl
- Enter item callnumber between 'ZZZ' and 'ZZZZ'
- Submit
=> You see a column 'Withdrawn' with withdrawn value
- Go to inventory tool : /cgi-bin/koha/tools/inventory.pl
- Enter item callnumber between 'ZZZ' and 'ZZZZ'
- Check 'Export to CSV file'
- Submit
- Open exported file
=> You see a column 'Withdrawn' with withdrawn value

Signed-off-by: Nick Clemens <nick@quecheelibrary.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>